Temperature range: -9.9 ℃ ~ 60 ℃ (14.2˚F ~ 140˚F) Humidity range: 10% ~ 99% Accuracy: temp ± 1 ℃, humidity ± 3% RH Update rate: 10 seconds LCD Screen Size: 3.34inch / 8.5cm How to set: 1. normal mode: "+": ° C / ° F switch "-": 12 / 24H format 2. day / time mode "SET" button: long press 'SET' button enter day / time. Press again enter month / day / hour / minute. +/-: Up / Down, press and hold to get a quick setting Colour:White Material:ABS Size:70 x 70 x 14mm Package Contents: 1 x Temperature and Humidity Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. [Battery Powered & Time Setting] with 1 CR2032 button battery, each battery can last 8-12 months working. thermometer features day and time shown. Long press the 'Set' button can enter the time setting. [High Accuracy & Fast Refresh]Digital indoor thermometer refreshes every 10 seconds to provide you updated and the lastest readings. Wide measuring range that measures temp from 14.2˚F~140˚F(-9.9℃ ~ 60℃) and humidity from 10% ~ 99%. The temp accuracy range around ± 1℃ while humidity accuracy is ±3%RH [3-Level Indicator]Humidity meter with humidity level indicates DRY/COMFORT/WET air condition quickly with just a glance. Ensures proper humidity, great for monitoring family's living conditions and health by preventing colds, dry skin, asthma, allergy, mold etc. [Clear LCD Display, Easy to Read]Humidity temperature gauge with 3.34 inch large LCD display features neat and slim border, easy to read from any angle and distance. While it's portable and to take it anywhere easily. ℉/℃ Switchable by "+", 12h/24h selector by "-". NOTE: No backlight function [ with 3 Mounting]Humidity temperature gauge has multiple mounting options: Tabletop Stand, Magnetic Back, Adherency Mount. With adhesive pads and built-in magnet, you can stick or place anywhere you like such as fridge, counter, living room, baby room, kitchen, basement, office, greenhouse, guitar room, office, garden and cellar